七年级数学下册整式的加减法计算题 38.docx
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七年级数学下册整式的加减法计算题38
45
(xy-—y+—)+(xy-x-4)
56
(4y-2x-5z2)+(4y+4x-7z2)
(4k2-4k)+(5k2-7k-1)
(7a2-2a-9b)+(6a2+4a-5b)
6x2+(4x2-7x-4)-(8x-1)
y2-(4x2+y)+(3x2+3y2)
1
(7x2-2xy-—x)+(5x2+3xy-x)
6
13
(—xy-4y2-3)-(x2-—xy-6y2+5)
64
55
(xy+—y-—)+(xy-x+8)
66
(2y+8x-2z2)+(7y+8x+8z2)
(6k2+5k)+(9k2-2k+9)
(5a2-2a+7b)-(6a2+2a+9b)
3x2-(7x2+7x+3)-(2x-5)
6y2+(8x2-y)-(4x2-5y2)
3
(6x2+xy+—x)+(4x2+xy-9x)
4
11
(—xy-2y2-9)+(x2+—xy-y2+7)
83
31
(xy+—y+—)-(xy+x+8)
43
(4y-x+2z2)-(5y+7x-8z2)
(4k2-8k)-(8k2+3k+2)
(3a2-6a-8b)-(2a2-4a+b)
8x2-(9x2+2x-7)+(2x+2)
9y2-(5x2+y)-(9x2+2y2)
1
(5x2+7xy+—x)+(8x2+9xy+8x)
3
21
(—xy+6y2+5)+(x2-—xy-4y2+9)
33
19
(xy+—y+—)+(xy+x-3)
58
(7y+9x+8z2)+(y+8x-9z2)
(8k2+4k)-(7k2+k+2)
(6a2-2a+4b)-(8a2+9a+9b)
2x2-(3x2+9x+8)-(7x-5)
5y2-(2x2+y)-(4x2-3y2)
1
(6x2+6xy+—x)-(x2-8xy+6x)
3
65
(—xy+4y2-7)+(x2-—xy+8y2-8)
76
51
(xy+—y-—)-(xy-x+6)
46
(5y-2x-4z2)-(2y-8x+9z2)
(k2-9k)+(9k2-k+2)
(9a2-2a-4b)+(4a2-7a-2b)
2x2+(7x2+9x-2)+(9x-2)
y2+(7x2-y)+(x2+7y2)
1
(2x2+2xy+—x)-(5x2-6xy+7x)
4
51
(—xy+3y2-7)-(x2-—xy+8y2+5)
66
21
(xy-—y-—)+(xy+x+9)
38
(7y+7x-4z2)+(5y+x-6z2)
(4k2+6k)-(k2-k+8)
(8a2-5a-2b)-(2a2-2a+4b)
4x2-(8x2-9x+9)+(6x-4)